package com.baizhi.ncc.service;

import com.baizhi.ncc.dao.AdminDao;
import com.baizhi.ncc.entity.Admin;

import com.baizhi.ncc.util.ImageCodeUtil;
import com.baizhi.ncc.util.Md5Utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
@Transactional
public class AdminServiceImpl implements AdminService{
    @Autowired
    private AdminDao adminDao;
    @Autowired
    private RedisTemplate redisTemplate;
    //生成验证码
    @Override
    public Map<String, String> getImageCodes() throws IOException {
        Map<String,String> map=new HashMap<>();
        //调用工具类 获取随机码字符
        String code = ImageCodeUtil.getSecurityCode();
        //调用工具类 根据随机码生成图片base64形式
        String imgBase64=ImageCodeUtil.careateImgBase64(code);
        //把base64图片信息存入map
        map.put("imgCode",imgBase64);
        //获取UUID
        String uuid= UUID.randomUUID().toString();
        //把UUID存到map
        map.put("token",uuid);
        //往Redis中村验证码
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        ValueOperations valuesOps = redisTemplate.opsForValue();
        valuesOps.set("CODE_"+uuid,code,1, TimeUnit.MINUTES);

        return map;
    }
    //登录检查
    @Override
    public Map<String, String> login(Admin admin, String token) {
        Map<String,String> map=new HashMap<>();
        //从redis中 获取验证码
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        ValueOperations valuesOps = redisTemplate.opsForValue();
        Object obj = valuesOps.get("CODE_" + token);

        //检查验证码
        if (obj==null){//验证码过期
            map.put("message","验证码过期");
            map.put("state","error");
            return map;
        }
        String serverCode=obj.toString();
        if (!admin.getEnCode().equals(serverCode)){//验证码错误
            map.put("message","验证码错误");
            map.put("state","error");
            return map;
        }
        //验证码正确 检查账号密码
        Admin user=adminDao.selectByUsername(admin.getUsername());
        if (user==null){
            map.put("message","用户不存在");
            map.put("state","error");
            return map;
        }else {//账号存在
            if (user.getStatus().equals(0)){
                map.put("message","用户已冻结");
                map.put("state","error");
                return map;
            }
            //获取输入密码
            String password = admin.getPassword();
            //家DB相同的盐
            String md5Pwd=user.getSalt() +password +user.getSalt();
            String md5Code = Md5Utils.getMd5Code(md5Pwd);
            //对加盐后的密码判断
            if (md5Code.equals(user.getPassword())){
                map.put("state","success");
                map.put("message",token);
                valuesOps.set("TOKEN_"+token,user);
                return map;

            }else {
                map.put("state","error");
                map.put("message","密码错误");
                return map;
            }
        }
    }
    //获取用户信息
    @Override
    public Admin getUserInfo(String token) {
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        ValueOperations valuesOps = redisTemplate.opsForValue();
        return (Admin)valuesOps.get("TOKEN_"+token);
    }
    //退出
    @Override
    public void logout(String token) {
        //从Redis中删除
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.delete("TOKEN_"+token);
    }

    @Override
    public void insert(Admin admin) {
        String password= admin.getPassword();
        //调用工具类 获取随机盐
        String salt= Md5Utils.getSalt(6);
        //对原始密码加盐
        String saltPwd=salt + password + salt;

        //调用工具类对原始密码 进行md5加密
        String md5Code= Md5Utils.getMd5Code(saltPwd);
        //对传递过来的管理员数据 进行数据加工
        admin.setPassword(md5Code);
        admin.setSalt(salt);
        adminDao.insert(admin);

    }
}
